A351851 Numbers that are divisible by the number of their divisors over the Gaussian integers.

1, 6, 9, 18, 20, 56, 126, 168, 180, 198, 280, 342, 352, 414, 432, 441, 486, 504, 558, 616, 625, 728, 774, 832, 846, 952, 1056, 1062, 1064, 1089, 1176, 1206, 1278, 1288, 1422, 1494, 1512, 1624, 1736, 1760, 1848, 1854, 1920, 1926, 2025, 2072, 2160, 2286, 2296, 2358

Offset

1,2

Comments

Numbers k such that A062327(k) | k.

All the odd terms are squares.

Links

Amiram Eldar, Table of n, a(n) for n = 1..10000

Example

6 is a term since it is divisible by A062327(6) = 6.

Mathematica

Select[Range[2400], Divisible[#, DivisorSigma[0, #, GaussianIntegers -> True]] &]

Crossrefs

Cf. A033950, A048166, A062327, A351853.

Sequence in context: A327796 A229354 A316069 * A301720 A316070 A020183

Adjacent sequences: A351848 A351849 A351850 * A351852 A351853 A351854

Keyword

nonn

Author

Amiram Eldar, Feb 22 2022

Status

approved